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Cold draughts in winter and stuffy rooms in summer due to poor insulation.
Cristal Windows provides expert double glazing installation across Ascot, including Sunninghill, Sunningdale, North Ascot, South Ascot and surrounding SL5 postcodes. From character properties near the High Street to modern family homes in North Ascot, we fit high-performance uPVC, timber and aluminium windows and doors designed to complement your home’s style. Triple glazing is also available for homeowners looking for the best in thermal and acoustic performance.
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Cold draughts in winter and stuffy rooms in summer due to poor insulation.
Sky-high energy bills that never seem to go down, no matter what you do.
Traffic noise from Ascot’s busy roads or outside disturbances disrupting your home’s peace.
Aging or worn-out windows and doors that look outdated and don’t function smoothly.
Many homeowners in Ascot deal with inefficient windows and doors, leading to higher energy costs, temperature fluctuations, and security risks. If your home feels uncomfortable year-round, and you’re tired of wasting money on heating and cooling, it’s time to consider an upgrade.
Want a home that’s quieter, warmer, and more energy-efficient? See how we help Ascot homeowners with high-quality window and door solutions!
At Cristal Windows, we help Ascot homeowners replace ageing glazing with modern, high-performance alternatives that suit the character of the property. Whether you need like-for-like timber window replacements for a period home or want to upgrade to slimline aluminium frames for a contemporary look, we provide A-rated double and triple glazed solutions built for long-term comfort and efficiency.
Timber and uPVC replacements – Replicate the look of original windows with modern double glazed units that are low-maintenance and thermally efficient.
Slimline aluminium frames – Maximise glass area and natural light with slim profiles, available in over 200 RAL colours to match your property.
A-rated energy efficiency – Thermally broken frames and high-performance sealed units to cut heating bills and keep rooms comfortable year-round.
Exterior doors and conservatories – Complete your upgrade with replacement front doors, patio doors or a bespoke conservatory designed around your home’s architecture.
Every installation is carried out by our FENSA-registered team as standard. Get in touch for a free, no-obligation quote and expert advice on the right glazing for your Ascot home.
We’ve been installing windows, doors and conservatories for homeowners across Ascot and the SL5 postcode area for over 40 years. Many of the properties we work on here are character homes around Ascot High Street and Sunninghill, where getting the right style of window matters as much as the performance. We also regularly fit slimline aluminium bi-folds and replacement front doors on larger detached homes across North Ascot and Sunningdale, where kerb appeal is a priority.
For homeowners looking for the highest level of thermal and acoustic insulation, we offer triple glazing across our full range. It’s a popular choice for orangery builds and conservatory projects in the Ascot area, where homeowners want a space they can use comfortably all year round.
Use our online double glazing quoting tool for a quick, transparent estimate tailored to your property. We also offer flexible financing through our FCA-regulated partners. Every installation is FENSA-certified, and our team handles everything from survey to sign-off. Visit our contact page or call us to discuss your project.
Cristal Windows, doors & Conservatories Ltd is an Introducer Appointed Representative (Financial Services Register No. 1009945) of Phoenix Financial Consultants Limited (Phoenix). Phoenix is a credit broker, not a lender. Phoenix is authorised and regulated by the Financial Conduct Authority (FRN: 539195), and offers finance from its panel of lenders. All finance subject to status and credit checks.
Cristal Windows is accredited by FENSA, Which? Trusted Trader, GGF (Glass and Glazing Federation) and other leading industry bodies, ensuring top-tier quality, safety, and reliability for every installation.
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We offer expert installation of high-quality triple and double glazed windows, doors, bi-fold doors, patio doors, composite doors, conservatories, and roof lanterns. If your home is located outside of the areas we typically cover, feel free to give us a call—we’re happy to discuss availability and may still be able to arrange an installation in your area.
When you choose Cristal Windows for your local double glazing and triple glazing installations, you are not only choosing an ethical, professional and family run business, but also a window company that provides high-quality products. We take the utmost care when installing our range of windows, doors, and conservatories and are accredited by trustworthy schemes such as FENSA.
We offer installations to homeowners in Berkshire, Hampshire, or Surrey.
